Effect of grain boundary structure on the intercrystalline damaging of austenic steel during brazing

Kornél Májlinger, P. Szabó

Research output: Contribution to journalArticle

Abstract

During brazing of austenitic stainless steel with copper based brazing material a common failure occurs, namely that the brazing material solutes along grain boundaries, which looks like cracks. This unfortunate effect occurred when AISI 304 and 310 steels are brazing. To avoid this unwanted effect - since the cracks propagate mainly on high angle grain boundaries - our goal was to enhance the number of special coincident site lattice type grain boundaries with thermomechanical treatment. Experiments were performed for 1, 48 and 72 hour heat treatments on materials cold rolled at different levels. After the thermomechanical treatment significant decrease in the crack size was found in depth and width, respectively.

Original languageEnglish
Pages (from-to)105-109
Number of pages5
JournalPeriodica Polytechnica, Mechanical Engineering
Volume55
Issue number2
DOIs
Publication statusPublished - 2011

Fingerprint

Brazing
Grain boundaries
Thermomechanical treatment
Steel
Cracks
Austenitic stainless steel
Crystal lattices
Heat treatment
Copper
Experiments

Keywords

  • Austenitic steel
  • Copper brazing
  • Electron backscatter diffraction
  • Intercrystalline cracking

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Effect of grain boundary structure on the intercrystalline damaging of austenic steel during brazing. / Májlinger, Kornél; Szabó, P.

In: Periodica Polytechnica, Mechanical Engineering, Vol. 55, No. 2, 2011, p. 105-109.

Research output: Contribution to journalArticle

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